We are intrigued by the nearly single-minded devotion to the dish shown by Bangkok Burger Company (G/F, Opus Building, Thong Lor Soi 10, 085-085-2423. Open daily 11am-11pm). Pick a size (regular or large), pick a meat (pork or beef) and finally, pick from an impressive selection of recipes, including The Penang (simmered in curry , B230-295) and The Gastro (Stilton cheese, onions, mushrooms and red wine sauce, B250-320). They also do a small selection of non-burger sandwiches and sides like chilli fries (B145) and crunchy onion rings (B125).